1. Tour of Wastewater Collection
System
Don Moore
Town of Yountville
Public Works Department/Utilities
Division

2. Introduction of Wastewater System
• Joint Treatment Facility (JTP)
• Recycled Water System/Discharge to Napa
River
• Sewer Collection System
• WW Pump Station

3. Rector Watershed Views Looking East
Wineries
Yountville
Veterans Home

4. Joint Treatment Plant
Final
Secondary
Primary Chlorine
Contact
Effluent Pond

5. Collection System

6. Wastewater Collection System
• System comprised of 634 residential & 76
Commercial Customers
• Reduce Inflow of Rainwater and Infiltration
of Groundwater
• Sewer System Management Plan
• Maintain and Improve Pump Station
• Replace Sewer Pipes

7. Elements of Sanitary Sewer
Management Plan
• Goals
• Organization
• Overflow Emergency Response Plan
• Fats, Oils, and Grease Control Program
• Legal Authority

8. Elements of Sanitary Sewer
Management Plan (cont.)
• Measures and Activities
• Design and Performance Provisions
• Capacity Management
• Monitoring, Measurement and Program
Modifications
• SSMP Program Audits

9. FOG (Fats, Oils and Grease)

10. Hardened Grease Chunk

11. “Root Ball”

12. “Break-in Lateral” vs. Factory Made

13. Broken Clay Lateral

14. Cast In Place Point Repair
Before After

15. Sag in Pipe (Abandoned K-Line)

16. Smoke Testing

17. Sewer Line Cleaning

18. Pipe Replacement

19. Construction of New Manhole Base

20. Finished Manhole Base

21. Epoxy Coating (System Loop)

22. Sewer Main Replacement Projects to
Date
• Jefferson St, from Madison to Humbolt
($230,000 in 2008)
• Yount St, from Finnell to Hopper Creek
($90,000 in 2008)
• Mulberry Extension ($70,000 in 2008)

23. Sewer Main Replacement Projects to
Date (cont.)
• Extension of the B-Line on
Washington Street to Land Lane ($567,000, 2009)
• Re-route of F-Line to remove sag and creek
crossing ($70,000 in 2009)
• Abandonment/Consolidation Project on
North Washington ($120,000 in 2010)

24. Collection System Projects for the Future
• Madison Street sewer main replacement from
Washington Street to Yount
• Yount Street sewer replacement from Hopper Creek to
Monroe
• “Slip-Line” F-Line from Champagne Drive to Oak Circle
• Rehabilitation/Upgrades @ Peter J. Bardesonno
Memorial Pump Station (Study required)

25. Wastewater Pump Station
Converted in 1977

26. Old Check Valve After Replacement

27. New BioAmp Process

28. Introduction of FOG Fighting Bacteria

29. Tie-In Point for Both Major Sewer
Mains

30. Pump Station “Wet-Well”

31. Newly Installed Hoist

32. Spare Pump Ready For Installation

33. Pump VFD’s (Variable Frequency Drives)
and Level/Pump Control System

34. Flow Meter

35. In Case of Emergency

36. Projects Completed
• Flygt submersible pumps installed (1996)
• VFD’s Installed (1996)
• New emergency generator installed (2004)
• Spare pump purchased and installed (2005)
• Maintenance activities performed (on-going)

37. Pump Station Upgrades
• Pump Station originally constructed/re-designed
in 1977 as part of Joint Treatment Plant Project
• VFD controllers are in need of replacement
• New level control system is necessary
• Force main, pumps and all piping should be
evaluated to see if it should be replaced/upsized